Abstract A good understanding of the solubility of elemental mercury over wide ranges of temperature, pressure and composition is an important issue to assess the possibility of mercury dropping out in gas processing streams. In this work, new mercury solubility in three multicomponent systems with methane content varying between 89 – 26 mol% have been measured over a wide range of temperature (243.15 to 323.15 K) and pressure and up to 20 MPa. A group contribution method for the Peng-Robinson equation of state has been used to allow calculation of binary interactions between mercury and saturated hydrocarbons, aromatic hydrocarbons, nitrogen and carbon dioxide. The parameters of the group contribution have been adjusted using mercury solubility previously measured in single components. Predictions of the developed model are validated against independent experimental data and the data generated in this work. A good agreement between predictions and experimental data is observed, supporting the reliability of the developed model.

中文翻译：

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高压流体中的元素汞分配第 2 部分：多组分系统中的模型验证和测量。

摘要 充分了解元素汞在很宽的温度、压力和成分范围内的溶解度是评估气体加工流中汞脱落可能性的重要问题。在这项工作中，在很宽的温度范围（243.15 至 323.15 K）和压力以及高达 20 MPa 的条件下，测量了甲烷含量在 89 - 26 mol% 之间变化的三个多组分系统中新的汞溶解度。Peng-Robinson 状态方程的群贡献方法已用于计算汞与饱和烃、芳香烃、氮和二氧化碳之间的二元相互作用。组贡献的参数已使用先前在单一组分中测量的汞溶解度进行了调整。已开发模型的预测针对独立的实验数据和本工作中生成的数据进行了验证。观察到预测和实验数据之间的良好一致性，支持开发模型的可靠性。